Answered: Selection of records over multiple pages in a grid

Hi all ,
We have a cell editor grid with pagination,in which the checkbox selection must persist across multiple pages.I came to know that we do not have standard built-in in extjs framework. But I've found a plugin for paging select persistence at http://www.sencha.com/forum/showthread.php?163418 .
I need to get the record id's of the rows selected in the multiple pages when check boxes are selected..Can any one suggest me how can i achieve it?